This addon require at least Blender v2.80 to work correctly (old code for Blender 2.79 is still available in the dedicated branch). It also optionally rely on GDAL ...
Please don't except a success story if you don't really know what you are trying to import in Blender... Use QGIS, to explore your data beforehand. This addon require at least Blender v2.80 to work ...